FR3042633A1 - TRANSPARENT ADHESIVE LABEL - Google Patents

Abstract

The invention relates to an adhesive label comprising a subassembly comprising a first, non-adhesive, so-called front layer, and a second adhesive layer, the front layer being disposed on the adhesive layer, said subset of the layer. front and adhesive layer comprising at least one transparent zone, the label (1) comprising at least one opacifying zone (10) on the front layer in said at least one transparent zone of said subassembly and at least one layer thermochromic transparent varnish (11) on said at least one opacification zone.

Description

The invention relates to an adhesive label comprising a subassembly comprising a first, non-adhesive, so-called front layer, and a second adhesive layer, the front layer being disposed on the adhesive layer, said subassembly the front layer and the adhesive layer comprising at least one transparent zone.

Because the subset is at least partially transparent, signs printed on the label in the transparent area are not very readable. This is particularly the case for a barcode printed on the label, which a barcode reader can not identify.

The object of the invention is to overcome this disadvantage. For this purpose, the subject of the invention is an adhesive label comprising a subset comprising a first, non-adhesive layer, called a front layer, and a second adhesive layer, the front layer being placed on the adhesive layer, said sub-assembly being set of the front layer and the adhesive layer comprising at least one transparent zone, the label comprising at least one opacifying zone on the front layer in said at least one transparent zone of said subassembly and at least one layer of varnish thermochromic transparency on said at least one opacification zone.

Thanks to the label according to the present invention, it is sufficient to write signs, such as a barcode, which are revealed by thermal printing in the thermochromic transparent varnish layer, and prove perfectly legible because of the contrast of revealed signs on the opacification zone.

According to another characteristic of the invention, said at least one opacification zone comprises an ink layer and / or a primer layer. The invention also relates to an adhesive assembly comprising at least one adhesive label as described above and a support layer integral with said at least one adhesive label.

According to another characteristic of the invention, the support layer is delimited by a first face secured to said at least one adhesive label and by a second face, opposite to the first face, said second face comprising at least one printing zone. opaque. The invention also relates to a method of manufacturing an adhesive assembly, from a subset comprising a first layer, non-adhesive, said front layer, and a second layer, adhesive, the front layer being disposed on the adhesive layer, said subset of the front layer and the adhesive layer comprising at least one transparent zone, the adhesive layer being integral with a support layer, said method comprising: a printing step of at least an opacification zone on the front layer in said at least one transparent zone of said subassembly; and a step of printing at least one layer of thermochromic transparent varnish on said at least one opacification zone.

According to another characteristic of the invention, the support layer being delimited by a first face integral with said adhesive layer and by a second face, opposite the first face, the manufacturing method comprises a printing step of at least an opaque printing area on said second face.

According to another characteristic of the invention, the step of printing at least one opaque printing area on the second face is prior to the step of printing at least one opacification zone and / or the step of printing at least one layer of thermochromic transparent varnish on said at least one opacification zone.

According to another characteristic of the invention, the method comprises a step of reversing the integral subassembly of the support layer. Other features and advantages of the invention will become apparent on reading the description which follows. This is purely illustrative and should be read in conjunction with the accompanying drawings in which: - Figure 1 is a cross-sectional view of a plurality of layers for an adhesive label according to the present invention; FIG. 2 is a perspective view of an adhesive assembly according to the present invention; FIG. 3 is a view from below of the adhesive assembly of FIG. 2 according to a first variant; - Figure 4 is a bottom view of the adhesive assembly of Figure 2 according to a second variant; - Figure 5 is a bottom view of the assembly of Figure 2 according to a third variant; FIG. 6 is a timing diagram of a manufacturing method of the assembly of FIG. 2 according to the present invention; and FIG. 7 is a longitudinal sectional view of a printer for implementing the method of FIG. 6.

Label and adhesive set

As illustrated in Figures 1 and 2, the invention relates to an adhesive label 1 and a set 2, the assembly 2 comprising at least one label 1 and a support layer 3. The label 1 comprises a subset 4, subsequently called complex 4.

The complex 4 comprises a first, non-adhesive, so-called front layer, and referenced 5.

The complex 4 also comprises a second adhesive layer, referenced 6, the front layer 5 being disposed on the adhesive layer 6.

As more particularly visible in FIG. 1, the front layer 5 is delimited by a contact face 7 of a contact face 8 of the adhesive layer 6.

The front layer 5 and the adhesive layer 6 are glued to each other via their contact faces 7 and 8.

The front layer 5 is also delimited by a face 9, opposite to the contact face 7.

The front face 9 of the label 1.

Advantageously, the complex 4 comprises at least one transparent zone.

In other words, the front layer 5 is transparent in at least one transparency zone, the adhesive layer 6 is transparent in at least one transparency zone, and the transparency zone of the front layer coincides at least partially with the zone transparency of the adhesive layer.

In the illustrated embodiment, the front layer 5 and the adhesive layer 6 are entirely transparent, so that the complex 4 is entirely transparent.

As more particularly visible in FIG. 1, the label 1 comprises at least one opacification zone 10 on the front layer 5 in the transparent zone of the subassembly 4.

As can be seen in FIG. 1, the label 1 comprises at least one layer of thermochromic transparent varnish 11 on said at least one opacification zone 10.

In the embodiment illustrated in FIG. 1, the opacification zone 10 consists of a primary film 12 and a colored ink layer 13.

The primary film 12 ensures the attachment of an ultraviolet light revealing ink.

The colored ink layer 13 makes it possible to provide a contrast with the signs to be revealed by thermal printing in the thermochromic transparent varnish layer 11.

The colored ink layer 13 is preferably white, and preferably white-type covering.

The thermochromic transparent varnish of the layer 11 ensures that, in order to write signs on the label 1, it suffices that a thermal head generates electrical pulses, in a desired shape of the signs, on the layer 11, which reveals the signs .

The contrast between the color of the ink of the colored layer 13 and the signs then ensures perfect visibility of the printed signs.

It is noted that the opacification zone may consist solely of layer 13, without primary film 12.

The support layer 3 is delimited by a first face 15 integral with the said at least one adhesive label and by a second face, 16, opposite the first face 15.

Advantageously, the adhesive assembly 2 comprises a plurality of labels 1 associated with a single support layer 3.

Preferably, the support layer 3 has the general shape of a rectangular band on which the labels 1 extend.

Advantageously, a width of the strip of the support layer 3 is slightly greater than a width of the label 1, so that the labels are successively arranged in a strip on the strip forming the support layer 3.

As can be seen in FIGS. 3 to 5, the second face 16 comprises at least one opaque printing area 17.

According to the variants illustrated in FIGS. 3 and 4, the second face 16 provided with the printing zone or zones 17 forms the backside of the adhesive assembly 2.

According to the variant illustrated in Figure 3, the second face 16 comprises two series of opaque printing areas 17, black in color.

The two sets of printing areas are arranged facing each other on the one hand, and next to each label 1 on the other hand.

As can be seen in FIG. 3, the two series are interrupted between two labels 1.

The two sets of areas extend along each label, so that a length of the print areas is equal to a label length 1.

The two series of zones are arranged at the periphery of the support strip 3, on either side of a central strip devoid of opaque printing.

According to the variant illustrated in Figure 4, the second face 16 comprises a series of opaque printing areas 17, black in color.

The series of printing areas is a central strip of the support strip 3.

The series of print areas interrupts between two labels 1.

Each opaque printing area 17 extends parallel to the directions of the lengths of each label 1.

Each print area has a length equal to the length of each label 1.

According to the variant illustrated in Figure 5, the second face 16 comprises a series of opaque printing areas 17, black in color.

Each opaque printing area 17 is disposed between two labels 1.

Each opaque printing area 17 extends parallel to the width directions of each label 1.

Each opaque printing area 17 has a length equal to the width of each label 1.

It is noted that the interruption of the series or series of printing areas 17 allows detection of the successive passages of the labels 1.

Manufacturing process

As can be seen in FIG. 6, a method of manufacturing the adhesive assembly 2 from the complex 4 integral with the layer of the support 3 comprises: a printing step 23 of at least one opacification zone; 10 on the front layer 5 in said at least one transparent zone of said subassembly 4; and a step of printing at least one thermochromic transparent lacquer layer on said at least one opacification zone.

Preferably, the manufacturing method comprises a step of printing 21 at least one opaque printing area 17 on said second face 12, prior to the printing steps 23 and 24.

As can be seen in FIG. 7, the complex 4 integral with the layer of the support is in the form of a coil of a band wound around a drum 31 of a printer 30, then moves into the printer 30 while being positioned around several rollers 32.

Subsequently, band 19 is used to denote the various layers of material moving in the printer 30 until forming assembly 2 at the end of the manufacturing process 20.

Then, the strip 19 moves towards a printing drum 33, in order to carry out the printing step 21 of the series or series of opaque printing areas 17 on the second face 16 of the support layer 3.

During this step, the opaque printing areas 17 are applied on the back of the support layer 3.

As can be seen in FIG. 7, the strip 19 then moves in a turning device 39 of the printer 30, which makes it possible to operate a reversal step 22.

During the inversion step 22, the band 19 is also inverted to allow printing on the front layer 5.

The strip 19 moves towards a printing drum 45, for the printing of the opacification zone 10.

Preferably, the primary film 12 and the colored ink layer 13 are applied consecutively to the front face 9 of the front layer 5 by printing drums 45 and 41, which enables step 23 to be carried out.

Finally, the strip 19 moves towards the last printing drum 47 of the printing machine 30 for printing the thermochromic transparent varnish layer, which makes it possible to perform step 24. At the end of the steps 21 to 24, we obtain the assembly 2 illustrated in Figure 1.

It should be noted that the interruption of the series or series of printing zones 17 makes it possible to detect the passages of the successive labels during the different steps of the method 20, which ensures in particular an adequate triggering of the printing steps.

Of course, it may be provided to print additional layers on the front 9, between steps 21 and 24.

Claims (8)

An adhesive label comprising a subassembly (4) comprising a first non-adhesive layer (5), said front layer, and a second adhesive layer (6), the front layer (5) being arranged on the adhesive layer ( 6), said subassembly (4) of the front layer (5) and the adhesive layer (4) comprising at least one transparent zone, the label (1) comprising at least one opacification zone (10) on the front layer (5) in said at least one transparent zone of said subassembly (4) and at least one layer of thermochromic transparent varnish on said at least one opacification zone. An adhesive label according to claim 1, wherein said at least one opacification zone comprises an ink layer and / or a primer layer. 3. Adhesive assembly comprising at least one adhesive label (1) according to one of claims 1 or 2 and a support layer (3) integral with said at least one adhesive label (1). 4. adhesive assembly according to the preceding claim, wherein the support layer (3) is delimited by a first face (15) integral with said at least one adhesive label (1) and by a second face (16), opposite to the first face, said second face (16) comprising at least one opaque printing area (17). 5. A method of manufacturing an adhesive assembly (2), from a subassembly (4) comprising a first non-adhesive layer, called a front layer (5), and a second adhesive layer (6), the front layer (5) being arranged on the adhesive layer (6), said subassembly (4) of the front layer (5) and the adhesive layer (6) comprising at least one transparent zone, the adhesive layer (6) ) being integral with a support layer (3), said method comprising: - a step of printing (23) at least one opacifying zone (10) on the front layer (5) in said at least one transparent zone of said subassembly (4); and a step of printing (24) at least one layer of thermochromic transparent varnish (11) on said at least one opacification zone (10). 6. Manufacturing process according to the preceding claim, the support layer (3) being delimited by a first face (15) integral with said adhesive layer (6) and by a second face (16), opposite to the first face, the manufacturing method comprising a step of printing (21) at least one opaque printing area (17) on said second face (16). 7. The manufacturing method according to the preceding claim, wherein the step of printing (21) at least one opaque printing area (17) on the second face (16) is prior to the printing step. (23) at least one opacification zone (10). 8. Manufacturing process according to one of claims 5 to 7, comprising a step (22) of reversal of the integral subassembly of the support layer (3).